To solve this question we have to make deduct these 2 years. 2109 minus 1990 will give the answer.
You are 119 years old.
(1428 months are passed.)
From 1990 to 2109 there are 119 years. If you want to learn your age in 2109 (born in 1990) your age is 119.
Let's see what will be your age if you born +1 or -1 from that date.